function isContained(a, b) {
    if (!(a instanceof Array) || !(b instanceof Array)) return false;
    if (a.length < b.length) return false;
    var aStr = a.toString();
    for (var i = 0, len = b.length; i < len; i++) {
        if (aStr.indexOf(b[i]) == -1) return false;
    }
    return true;
}
export {
    isContained
}